This King 5B Symphony Tenor Trombone is a large bore model from the mid-1970s, offering a unique mix of playability, power, and classic King design. Often compared to the 4B, the 5B features a slightly larger 9" bell and the same .547 bore with F-attachment, making it a versatile choice for both section and solo use.
What makes this particular horn stand out is its factory original silver plate—a finish rarely seen on this model. The plating is in excellent shape and gives the instrument a brilliant look and resonant tone. The handslide is smooth and responsive, with one minor dent professionally removed. The horn has received recent service, including cleaning and rotor tuning, and is in excellent playing condition.
This would make an ideal first trigger horn for an advancing player moving into symphonic or large ensemble work. It’s also well-suited for small bore trombonists—those accustomed to a King 2B or 3B—looking for a large bore option that still feels familiar. With a slightly larger mouthpiece, the 5B opens up and can even function as a small bass trombone in community band or jazz big band settings.
Includes the original King case, mouthpiece, and factory paperwork—a complete, well-preserved example of a vintage U.S.-made King.
Is the King 5B a good option for small bore players looking to double on large bore?
Yes. The King 5B retains the ergonomic feel of smaller King models while offering the response and range of a full .547 bore symphonic horn. Many players transitioning from 2B or 3B appreciate how naturally the 5B plays, making it a strong choice for occasional large bore use or jazz band doubling.
This King 5B has been sold and is now archived as a reference for vintage trombone enthusiasts and King loyalists.
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